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Mariah Carey: March 27 - We aren't sure if she is 47 or 48, Mimi has always kept her age on lock. Either way, she looks incredible!(Photo: D Dipasupil/Getty Images) 

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Jessie J: March 27 - This 29-year-old has one of the best voices in contemporary music.(Photo: Anthony Harvey/Getty Images) 

Photo By Photo: Anthony Harvey/Getty Images

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Brenda Song: March 27 - The Suite Life of Zack & Cody actress is 29 and all grown up.(Photo: Jason LaVeris/FilmMagic) 

Photo By Photo: Jason LaVeris/FilmMagic

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Fergie: March 27 - The "MILF Money" songstress continues to be flawless at 42.(Photo: Noam Galai/WireImage) 

Photo By Photo: Noam Galai/WireImage

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Art Evans: March 27 - Die Hard 2, A Soldier's Story and Fright Night are just three films this 75-year-old has starred in. (Photo: David Livingston/Getty Images) 

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Lady Gaga: March 28 - Mother Monster is enjoying the single life at 31.(Photo: Jason Merritt/Getty Images) 

Photo By Photo: Jason Merritt/Getty Images

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Young Scooter: March 28 - The Atlanta rapper celebrates his 31st birthday this week.(Photo: Prince Williams/Getty Images)

Photo By Photo: Prince Williams/Getty Images

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Cheryl 'Salt' James: March 28 - As one half of Salt-N-Pepa, this 51-year-old holds an iconic place in hip-hop.(Photo: D Dipasupil/Getty Images for WE tv) 

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Byron Scott: March 28 - Having served as the head coach of the Los Angeles Lakers, this 56-year-old holds a major place in the sporting world.(Photo: JC Olivera/Getty Images) 

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PJ Morton: March 29 - This R&B crooner turns 36 this week.(Photo: Maury Phillips/BET/Getty Images for BET) 

Photo By Photo: Maury Phillips/BET/Getty Images for BET

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Earl Campbell: March 29 - The Tyler Rose turns 62 this week.(Photo: Michael Tullberg/Getty Images) 

Photo By Photo: Michael Tullberg/Getty Images

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Walt Frazier: March 29 - The former NBA athlete is the true definition of a vet at 72.(Photo: Brad Barket/Getty Images) 

Photo By Photo: Brad Barket/Getty Images

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Celine Dion: March 30 - This 49-year-old iconic musician will always be one of the greatest.(Photo: Jason Merritt/Getty Images for The UCLA Department of Head and Neck Surgery) 

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MC Hammer: March 30 - At 55, this performer is still known as a music and fashion trendsetter.(Photo: Neilson Barnard/Getty Images for BMI) 

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Tracy Chapman: March 30 - This 53-year-old singer is known for penning classic hits like "Fast Car," "Crossroads" and "Talkin' 'Bout a Revolution."(Photo: Michael Loccisano/FilmMagic) 

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Simon Webbe: March 30 - This English singer/songwriter/rapper and actor turns 39 this week.(Photo: Karwai Tang/WireImage) 

Photo By Photo: Karwai Tang/WireImage

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Jay Rock: March 31 - The MC is now 32.(Photo: Prince Williams/WireImage) 

Photo By Photo: Prince Williams/WireImage

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Tony Yayo: March 31 - The former G-Unit member is laying low at 39.(Photo: Johnny Nunez/WireImage) 

Photo By Photo: Johnny Nunez/WireImage

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Támar: March 31 - This 37-year-old started her career in Girl's Tyme with Beyoncé and Kelly Rowland before the group turned into Destiny's Child.(Photo: Chris Haston/NBC) 

Photo By Photo: Chris Haston/NBC

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Tony Cox: March 31 - The hilarious comedian turns 59 this week.(Photo: Noam Galai/WireImage) 

Photo By Photo: Noam Galai/WireImage

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Rachel Maddow: April 1 - The famed television host and political commentator celebrates her 44th birthday.(Photo: Theo Wargo/Getty Images for NBC) 

Photo By Photo: Theo Wargo/Getty Images for NBC

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Kid Ink: April 1 - The Cali rapper celebrates his 31st birthday this week.(Photo: Chelsea Lauren/WireImage) 

Photo By Photo: Chelsea Lauren/WireImage

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David Oyelowo: April 1 - The 41-year-old gave a rousing performing in A United Kingdom.(Photo: Christopher Polk/Getty Images) 

Photo By Photo: Christopher Polk/Getty Images

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Yung Joc: April 2 - The rapper-turned-reality-star is still stirring up drama on Love & Hip Hop at 34.(Photo: Jamie McCarthy/WireImage) 

Photo By Photo: Jamie McCarthy/WireImage

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Adam Rodríguez: April 2 - CSI: Miami's leading man turns 42.(Photo: Marcus Ingram/Getty Images for NAACP Image Awards) 

Photo By Photo: Marcus Ingram/Getty Images for NAACP Image Awards

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Quavo: April 2 - This member of the popular rap group Migos celebrates his 26th birthday.(Photo: Prince Williams/Wireimage) 

Photo By Photo: Prince Williams/Wireimage